BIOL 1510 Lecture Notes - Lecture 1: Homeobox, Rna Interference, Proteasome
Document Summary
In operon models, the function of the promoter is to bind with rna plymerase. The genes that determine which body parts form on each bod segment of a fruit fly are called. Hox genes homeodomain a highly conserved family of sequences, 60 amino acids in length and found within a large number of transcription factors, that can form helix-turn-helix structures and bind dna in a sequence specific manner. Rna interference mechanisms affect the activity of mrna. Translational control can alter the amount of protein product. Alternative pre-mrna splicing can result in different protein products. Proteasomes are cell structures, contain catalytic enzymes, are protein complexes and only accept proteins that have been properly tagged. Insulin does not become active until 30 amino acids are cleaved from the middle of the molecule. The mrna for vitellin is longer-lived if it has a poly-a tail angiogenesis the formation of new blood vessels.
